grimm



(No Model.)

P. H. GRIMM. PULLEY.

No. 432,701. Patented July 22, 1890.

urn rains arnur FFI PAUL H. GRIMM, OF GLEN COVE, NEWV YORK, ASSIGNOR OF ONE-HALF TO LOUIS T. DURY EA, OF SAME PLACE.

PULLEY.

SPECIFICATION forming part of Letters Patent No. 432,701, dated July 22 1890.

Application filed February 20, 1890. Serial No. 341147. (Noniodel) To all whom it may concern.- wedge each other more or less tightly in the Be it known that I, PAUL H. GRIMM, of groove; Both of the forms are necessary in Glen Cove, Queens county, and State of New order that the blocks may be placed in the York, have inventedacertain new and useful groove, as one of the sections may first be 5 Improvementin \V heels and Pulleys for Wire placed in the groove and the other then slid Rope, of which the following is a specificain endwise by the side of it. Between the t blocks of wood are placed blocks of india- My invention relates to wheels or pulleys rubber C. These blocks of rubber also subwhich are used for supporting a traveling stantially conform in shape to the shape of 10 cable, usually a wire rope. the groove, but they do not extend up as high I will describe in detail a wheel or pulley as do the blocks 0. They are shown as are embodying my improvement, and then point shape upon their upper sides and about midout the novel features in claims. way in their widths. Such upper sides are In the accompanying drawings, Figure 1 is coincident with the bottoms of the grooves o.

15 a side elevation of a wheel or pulley embody- The india-rubber blocks, by the frictional remg my improvement, a portion being broken sistance which they offer to the slipping of away and shown in section. Fig. 2 is a secthe cable passing over the wheel or pulley, tion thereof, taken on the linear; 00, Fig. 1. aid in the proper travel of the cable, while Fig. 3 is a section thereof, taken on the line the grooved blocks 0 act as guides for the 20 y 1 Fig. 1. Fig. at is a detail view showing cable and prevent the contact of the latter two forms of blocks of wood which are cmwith the side walls of the groove in the rim ployed upon the wheel. Figs. 2, 3, and 4 are A of the wheel.

drawn to a much larger scale than Fig. 1.. The use of the wooden blocks described is Similar letters of reference designate correvery advantageous on account of their dura- 2 5 sponding parts 111 all the figures. bility and cheapness, while at the same time The wheel comprises a rim portion A, a they prevent undue wear which might be hub portion 13, and spokes a extending becaused by the slipping of the cable. tween the rim and the hub portion. The rim What I claim as my invention, and desire A is peripherically grooved, and, as shown to secure by Letters Patent, is

30 more clearly in Figs. 2 and 3, is substantially 1. The combination, with a wheel or pulley U-shaped in the cross-section. The groove provided with a peripherical groove having has a widened portion b near its bottom, and a widened bottom portion, a widened top or a widened portion b at its top or open side. outer portion and a contracted intermediate Intermediate of the widened portions Z) 5 portion, of alternate blocks of wood andindia- 5 the groove is contracted as at 11 Inserted rubber arranged in said groove, said blocks in the said groove are alternate blocks 0 of being of substantially the same shape as the wood and G of india-rubber. The blocks of said groove and the blocks of wood being wood are preferably made of a hard wood, made up of sections adapted to be slid past c. such, for instance, as hard maple. They 0011- each other, substantially as specified.

40 form in shape to the shape of the groove and 2. The combination, with awheel provided fit snugly therein when in position. The with aperipherically-shaped groove, of altershape of the groove is such as to cause the nate blocks of wood and india-rubber arblocks to be locked in the groove against raranged in said groove, said blocks of wood dial displacement. The blocks upon their being longitudinally grooved upon their up- 5 outer sides are provided with grooves c in per sides, but having the portions at the sides which the wire rope or cable travels. I preof said grooves extending upwardly beyond fer that the blocks be made up of sections, the india-rubber blocks, substantially as either of the form shown at g, Fig. 4, or that specified.

shown at h in the same figure. In the form PAUL H. GRIMM. 50 shown at g the block is divided diagonally YVitnesses:

from one corner to another. This is advan- FREDK. HAYNES,

tageous,because the sectionsof the block will LInA M. EGBERT. 

